I am trying to provision a new Yealink T23G. The 3CX server is in Google Cloud. The phones are all in my house behind a firewall. I upgraded the firmware to the lastest version, and I have followed this guide: https://www.3cx.com/docs/manual/configuring-ip-phones/#h.x4oged39tp44 I tried logging into the phone using the web interface and setting the Server URL to my google server, and the user name and password to those in the extensions Authentication section, but that did not help either. Does anyone know how to do this? I was able to provision a Yealink T21P E2 without any problem. It just boots up and says Redirector: Update skipped.